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21 Aug 2019, 22:47
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
81% (02:27) correct
19%
(02:44)
wrong
based on 62
sessions
History
Date
Time
Result
Not Attempted Yet
In the results of a survey administered to the students in a particular class, 1/3 identified themselves as citizens of the U.S. only, 1/3 identified themselves as not U.S. citizens, 1/10 identified themselves as citizens of both the U.S. and at least one other country, and 28 students did not reply to the survey. What is the number of students in the class?
A. 60
B. 110
C. 120
D. 200
E. 400
A. 60
B. 110
C. 120
D. 200
E. 400
Updated on: 22 Aug 2019, 08:08
Originally posted by Archit3110 on 22 Aug 2019, 03:55.
Last edited by Archit3110 on 22 Aug 2019, 08:08, edited 1 time in total.
Last edited by Archit3110 on 22 Aug 2019, 08:08, edited 1 time in total.
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Bunuel
In the results of a survey administered to the students in a particular class, 1/3 identified themselves as citizens of the U.S. only, 1/3 identified themselves as not U.S. citizens, 1/10 identified themselves as citizens of both the U.S. and at least one other country, and 28 students did not reply to the survey. What is the number of students in the class?
A. 60
B. 110
C. 120
D. 200
E. 400
A. 60
B. 110
C. 120
D. 200
E. 400
given
x/3+x/3+x/10 ; 23x/30
7x/30 = 28
x= 120
IMO C
22 Aug 2019, 04:48
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In my Opinion, the answer is C
Assuming the class size is 120 students.
1/3 - Are US Citizens = 120 *1/3 = 40 students
1/3 - Non US Citizens = 120 * 1/3 = 40 Students
1/10 - Are dual nationals = 120 *1/10 = 12 Students
Did not answer survey = 28 Students
40 + 40 + 12 + 28 = 120 Students
This was the only one that satisfies the criteria.
Assuming the class size is 120 students.
1/3 - Are US Citizens = 120 *1/3 = 40 students
1/3 - Non US Citizens = 120 * 1/3 = 40 Students
1/10 - Are dual nationals = 120 *1/10 = 12 Students
Did not answer survey = 28 Students
40 + 40 + 12 + 28 = 120 Students
This was the only one that satisfies the criteria.
